As a GP, I tend to take self-reported intake of alcohol, food and drugs with a pinch of salt. It is not that I don't believe what patients say, but I recognise that it is hard to be accurate. We are encouraged to ask people routinely about alcohol intake and there are some objective signs that a person may be drinking too much, such as raised blood pressure, indigestion and abnormal blood-test results. I have never heard of the idea of doubling the amount that a patient says they are drinking, as lead author of the study, Sadie Boniface, has suggested. Our relationship with patients relies on each believing that the other is telling the truth as they see it.

If you are drinking much more than the NHS recommends – three to four units for men or two to three for women a day – it is worth seeing your GP to talk through your approach to alcohol. If he or she seems to disbelieve your estimates, don't take it personally. Chances are your GP is just projecting. Overdrinking and underestimating intake affect most of us. Doctors are no different.